Apple Updates The Apple Store App, Prepares For Downloadable Content?

Apple has rolled out a minor update for its Apple Store app, changing little on the surface. But could the recent 2.7 update prepare the application for its rumored downloadable content feature?
The ambiguous release notes for Apple Store 2.7 explain that the update makes "performance enhancements, including improved product search capabilities." As a reminder, a report from several days ago argued that Apple was planning on updating its App Store application today, adding downloadable content:

Essentially, the upcoming update enables the Apple Store app to promote content from the App Store, iTunes Store, and iBookstore. How? By offering certain premium items from those stores free for a limited time.
For example, as indicated in the leaked image above [see below], the puzzle game Color Zen, which normally costs $0.99, is made available to download free of charge from the updated Apple Store app.